Finding the Third Proportional to 131,037.50 and 286,611.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,037.50 : 286,611.50 = 286,611.50 : x
2. Step 2: Convert to fraction form
   131,037.50/286,611.50 = 286,611.50/x
3. Step 3: Cross multiply
   131,037.50x = 286,611.50 × 286,611.50
4. Step 4: Simplify right side
   131,037.50x = 82,146,151,932.25
5. Step 5: Solve for x
   x = 82,146,151,932.25/131,037.50
6. Step 6: Final answer
   x = 626,890.41