Finding the Third Proportional to 45,142.50 and 69,862.50

Step by Step Solution

1. Step 1: Write the proportion equation
   45,142.50 : 69,862.50 = 69,862.50 : x
2. Step 2: Convert to fraction form
   45,142.50/69,862.50 = 69,862.50/x
3. Step 3: Cross multiply
   45,142.50x = 69,862.50 × 69,862.50
4. Step 4: Simplify right side
   45,142.50x = 4,880,768,906.25
5. Step 5: Solve for x
   x = 4,880,768,906.25/45,142.50
6. Step 6: Final answer
   x = 108,119.15