Finding the Third Proportional to 52,360 and 78,320

Step by Step Solution

1. Step 1: Write the proportion equation
   52,360 : 78,320 = 78,320 : x
2. Step 2: Convert to fraction form
   52,360/78,320 = 78,320/x
3. Step 3: Cross multiply
   52,360x = 78,320 × 78,320
4. Step 4: Simplify right side
   52,360x = 6,134,022,400
5. Step 5: Solve for x
   x = 6,134,022,400/52,360
6. Step 6: Final answer
   x = 117,150.92