Finding the Third Proportional to 172,300,680 and 368,820,930

Step by Step Solution

1. Step 1: Write the proportion equation
   172,300,680 : 368,820,930 = 368,820,930 : x
2. Step 2: Convert to fraction form
   172,300,680/368,820,930 = 368,820,930/x
3. Step 3: Cross multiply
   172,300,680x = 368,820,930 × 368,820,930
4. Step 4: Simplify right side
   172,300,680x = 136,028,878,406,064,896
5. Step 5: Solve for x
   x = 136,028,878,406,064,896/172,300,680
6. Step 6: Final answer
   x = 789,485,441.42