Finding the Third Proportional to 42,585.75 and 60,709.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,585.75 : 60,709.50 = 60,709.50 : x
2. Step 2: Convert to fraction form
   42,585.75/60,709.50 = 60,709.50/x
3. Step 3: Cross multiply
   42,585.75x = 60,709.50 × 60,709.50
4. Step 4: Simplify right side
   42,585.75x = 3,685,643,390.25
5. Step 5: Solve for x
   x = 3,685,643,390.25/42,585.75
6. Step 6: Final answer
   x = 86,546.40