Finding the Third Proportional to 353,781,988 and 765,513,320

Step by Step Solution

1. Step 1: Write the proportion equation
   353,781,988 : 765,513,320 = 765,513,320 : x
2. Step 2: Convert to fraction form
   353,781,988/765,513,320 = 765,513,320/x
3. Step 3: Cross multiply
   353,781,988x = 765,513,320 × 765,513,320
4. Step 4: Simplify right side
   353,781,988x = 586,010,643,097,422,336
5. Step 5: Solve for x
   x = 586,010,643,097,422,336/353,781,988
6. Step 6: Final answer
   x = 1,656,417,406.69