Finding the Third Proportional to 131,247 and 287,917.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,247 : 287,917.50 = 287,917.50 : x
2. Step 2: Convert to fraction form
   131,247/287,917.50 = 287,917.50/x
3. Step 3: Cross multiply
   131,247x = 287,917.50 × 287,917.50
4. Step 4: Simplify right side
   131,247x = 82,896,486,806.25
5. Step 5: Solve for x
   x = 82,896,486,806.25/131,247
6. Step 6: Final answer
   x = 631,606.72