Finding the Third Proportional to 52,440 and 78,645

Step by Step Solution

1. Step 1: Write the proportion equation
   52,440 : 78,645 = 78,645 : x
2. Step 2: Convert to fraction form
   52,440/78,645 = 78,645/x
3. Step 3: Cross multiply
   52,440x = 78,645 × 78,645
4. Step 4: Simplify right side
   52,440x = 6,185,036,025
5. Step 5: Solve for x
   x = 6,185,036,025/52,440
6. Step 6: Final answer
   x = 117,945.00