Finding the Third Proportional to 431,347 and 653,066

Step by Step Solution

1. Step 1: Write the proportion equation
   431,347 : 653,066 = 653,066 : x
2. Step 2: Convert to fraction form
   431,347/653,066 = 653,066/x
3. Step 3: Cross multiply
   431,347x = 653,066 × 653,066
4. Step 4: Simplify right side
   431,347x = 426,495,200,356
5. Step 5: Solve for x
   x = 426,495,200,356/431,347
6. Step 6: Final answer
   x = 988,751.98