Finding the Third Proportional to 11,139 and 22,687.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,139 : 22,687.50 = 22,687.50 : x
2. Step 2: Convert to fraction form
   11,139/22,687.50 = 22,687.50/x
3. Step 3: Cross multiply
   11,139x = 22,687.50 × 22,687.50
4. Step 4: Simplify right side
   11,139x = 514,722,656.25
5. Step 5: Solve for x
   x = 514,722,656.25/11,139
6. Step 6: Final answer
   x = 46,209.05