Finding the Third Proportional to 28,680 and 62,866.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,680 : 62,866.50 = 62,866.50 : x
2. Step 2: Convert to fraction form
   28,680/62,866.50 = 62,866.50/x
3. Step 3: Cross multiply
   28,680x = 62,866.50 × 62,866.50
4. Step 4: Simplify right side
   28,680x = 3,952,196,822.25
5. Step 5: Solve for x
   x = 3,952,196,822.25/28,680
6. Step 6: Final answer
   x = 137,803.24