Finding the Third Proportional to 59,400.50 and 78,516.75

Step by Step Solution

1. Step 1: Write the proportion equation
   59,400.50 : 78,516.75 = 78,516.75 : x
2. Step 2: Convert to fraction form
   59,400.50/78,516.75 = 78,516.75/x
3. Step 3: Cross multiply
   59,400.50x = 78,516.75 × 78,516.75
4. Step 4: Simplify right side
   59,400.50x = 6,164,880,030.56
5. Step 5: Solve for x
   x = 6,164,880,030.56/59,400.50
6. Step 6: Final answer
   x = 103,784.99