Finding the Third Proportional to 28,407 and 42,502.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,407 : 42,502.50 = 42,502.50 : x
2. Step 2: Convert to fraction form
   28,407/42,502.50 = 42,502.50/x
3. Step 3: Cross multiply
   28,407x = 42,502.50 × 42,502.50
4. Step 4: Simplify right side
   28,407x = 1,806,462,506.25
5. Step 5: Solve for x
   x = 1,806,462,506.25/28,407
6. Step 6: Final answer
   x = 63,592.16