Finding the Third Proportional to 28,516.50 and 42,530.75

Step by Step Solution

1. Step 1: Write the proportion equation
   28,516.50 : 42,530.75 = 42,530.75 : x
2. Step 2: Convert to fraction form
   28,516.50/42,530.75 = 42,530.75/x
3. Step 3: Cross multiply
   28,516.50x = 42,530.75 × 42,530.75
4. Step 4: Simplify right side
   28,516.50x = 1,808,864,695.56
5. Step 5: Solve for x
   x = 1,808,864,695.56/28,516.50
6. Step 6: Final answer
   x = 63,432.21