Finding the Third Proportional to 30,217,875 and 64,743,780

Step by Step Solution

1. Step 1: Write the proportion equation
   30,217,875 : 64,743,780 = 64,743,780 : x
2. Step 2: Convert to fraction form
   30,217,875/64,743,780 = 64,743,780/x
3. Step 3: Cross multiply
   30,217,875x = 64,743,780 × 64,743,780
4. Step 4: Simplify right side
   30,217,875x = 4,191,757,048,688,400
5. Step 5: Solve for x
   x = 4,191,757,048,688,400/30,217,875
6. Step 6: Final answer
   x = 138,717,796.96