Finding the Third Proportional to 172,909,326 and 267,443,961

Step by Step Solution

1. Step 1: Write the proportion equation
   172,909,326 : 267,443,961 = 267,443,961 : x
2. Step 2: Convert to fraction form
   172,909,326/267,443,961 = 267,443,961/x
3. Step 3: Cross multiply
   172,909,326x = 267,443,961 × 267,443,961
4. Step 4: Simplify right side
   172,909,326x = 71,526,272,275,369,520
5. Step 5: Solve for x
   x = 71,526,272,275,369,520/172,909,326
6. Step 6: Final answer
   x = 413,663,472.82