Finding the Third Proportional to 53,187 and 78,730.50

Step by Step Solution

1. Step 1: Write the proportion equation
   53,187 : 78,730.50 = 78,730.50 : x
2. Step 2: Convert to fraction form
   53,187/78,730.50 = 78,730.50/x
3. Step 3: Cross multiply
   53,187x = 78,730.50 × 78,730.50
4. Step 4: Simplify right side
   53,187x = 6,198,491,630.25
5. Step 5: Solve for x
   x = 6,198,491,630.25/53,187
6. Step 6: Final answer
   x = 116,541.48