Finding the Third Proportional to 272,484 and 425,281.50

Step by Step Solution

1. Step 1: Write the proportion equation
   272,484 : 425,281.50 = 425,281.50 : x
2. Step 2: Convert to fraction form
   272,484/425,281.50 = 425,281.50/x
3. Step 3: Cross multiply
   272,484x = 425,281.50 × 425,281.50
4. Step 4: Simplify right side
   272,484x = 180,864,354,242.25
5. Step 5: Solve for x
   x = 180,864,354,242.25/272,484
6. Step 6: Final answer
   x = 663,761.37