Finding the Third Proportional to 67,588,656 and 138,760,389

Step by Step Solution

1. Step 1: Write the proportion equation
   67,588,656 : 138,760,389 = 138,760,389 : x
2. Step 2: Convert to fraction form
   67,588,656/138,760,389 = 138,760,389/x
3. Step 3: Cross multiply
   67,588,656x = 138,760,389 × 138,760,389
4. Step 4: Simplify right side
   67,588,656x = 19,254,445,555,431,320
5. Step 5: Solve for x
   x = 19,254,445,555,431,320/67,588,656
6. Step 6: Final answer
   x = 284,876,881.64