Finding the Third Proportional to 40,642.50 and 55,368.75

Step by Step Solution

1. Step 1: Write the proportion equation
   40,642.50 : 55,368.75 = 55,368.75 : x
2. Step 2: Convert to fraction form
   40,642.50/55,368.75 = 55,368.75/x
3. Step 3: Cross multiply
   40,642.50x = 55,368.75 × 55,368.75
4. Step 4: Simplify right side
   40,642.50x = 3,065,698,476.56
5. Step 5: Solve for x
   x = 3,065,698,476.56/40,642.50
6. Step 6: Final answer
   x = 75,430.85