Finding the Third Proportional to 11,131 and 15,562.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,131 : 15,562.50 = 15,562.50 : x
2. Step 2: Convert to fraction form
   11,131/15,562.50 = 15,562.50/x
3. Step 3: Cross multiply
   11,131x = 15,562.50 × 15,562.50
4. Step 4: Simplify right side
   11,131x = 242,191,406.25
5. Step 5: Solve for x
   x = 242,191,406.25/11,131
6. Step 6: Final answer
   x = 21,758.28