Finding the Third Proportional to 99,053.25 and 206,314.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,053.25 : 206,314.50 = 206,314.50 : x
2. Step 2: Convert to fraction form
   99,053.25/206,314.50 = 206,314.50/x
3. Step 3: Cross multiply
   99,053.25x = 206,314.50 × 206,314.50
4. Step 4: Simplify right side
   99,053.25x = 42,565,672,910.25
5. Step 5: Solve for x
   x = 42,565,672,910.25/99,053.25
6. Step 6: Final answer
   x = 429,725.15