Finding the Third Proportional to 272,631 and 413,851.50

Step by Step Solution

1. Step 1: Write the proportion equation
   272,631 : 413,851.50 = 413,851.50 : x
2. Step 2: Convert to fraction form
   272,631/413,851.50 = 413,851.50/x
3. Step 3: Cross multiply
   272,631x = 413,851.50 × 413,851.50
4. Step 4: Simplify right side
   272,631x = 171,273,064,052.25
5. Step 5: Solve for x
   x = 171,273,064,052.25/272,631
6. Step 6: Final answer
   x = 628,223.00