Finding the Third Proportional to 81,480 and 123,084

Step by Step Solution

1. Step 1: Write the proportion equation
   81,480 : 123,084 = 123,084 : x
2. Step 2: Convert to fraction form
   81,480/123,084 = 123,084/x
3. Step 3: Cross multiply
   81,480x = 123,084 × 123,084
4. Step 4: Simplify right side
   81,480x = 15,149,671,056
5. Step 5: Solve for x
   x = 15,149,671,056/81,480
6. Step 6: Final answer
   x = 185,931.16