Finding the Third Proportional to 28,565.79 and 66,120.68

Step by Step Solution

1. Step 1: Write the proportion equation
   28,565.79 : 66,120.68 = 66,120.68 : x
2. Step 2: Convert to fraction form
   28,565.79/66,120.68 = 66,120.68/x
3. Step 3: Cross multiply
   28,565.79x = 66,120.68 × 66,120.68
4. Step 4: Simplify right side
   28,565.79x = 4,371,944,282.34
5. Step 5: Solve for x
   x = 4,371,944,282.34/28,565.79
6. Step 6: Final answer
   x = 153,048.26