Finding the Third Proportional to 28,706.50 and 42,209.25

Step by Step Solution

1. Step 1: Write the proportion equation
   28,706.50 : 42,209.25 = 42,209.25 : x
2. Step 2: Convert to fraction form
   28,706.50/42,209.25 = 42,209.25/x
3. Step 3: Cross multiply
   28,706.50x = 42,209.25 × 42,209.25
4. Step 4: Simplify right side
   28,706.50x = 1,781,620,785.56
5. Step 5: Solve for x
   x = 1,781,620,785.56/28,706.50
6. Step 6: Final answer
   x = 62,063.32