Finding the Third Proportional to 131,394 and 288,220.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,394 : 288,220.50 = 288,220.50 : x
2. Step 2: Convert to fraction form
   131,394/288,220.50 = 288,220.50/x
3. Step 3: Cross multiply
   131,394x = 288,220.50 × 288,220.50
4. Step 4: Simplify right side
   131,394x = 83,071,056,620.25
5. Step 5: Solve for x
   x = 83,071,056,620.25/131,394
6. Step 6: Final answer
   x = 632,228.69