Finding the Third Proportional to 300,818,511,679 and 455,096,705,758

Step by Step Solution

1. Step 1: Write the proportion equation
   300,818,511,679 : 455,096,705,758 = 455,096,705,758 : x
2. Step 2: Convert to fraction form
   300,818,511,679/455,096,705,758 = 455,096,705,758/x
3. Step 3: Cross multiply
   300,818,511,679x = 455,096,705,758 × 455,096,705,758
4. Step 4: Simplify right side
   300,818,511,679x = 207,113,011,591,783,628,406,784
5. Step 5: Solve for x
   x = 207,113,011,591,783,628,406,784/300,818,511,679
6. Step 6: Final answer
   x = 688,498,225,843.20