Finding the Third Proportional to 55,418 and 85,983

Step by Step Solution

1. Step 1: Write the proportion equation
   55,418 : 85,983 = 85,983 : x
2. Step 2: Convert to fraction form
   55,418/85,983 = 85,983/x
3. Step 3: Cross multiply
   55,418x = 85,983 × 85,983
4. Step 4: Simplify right side
   55,418x = 7,393,076,289
5. Step 5: Solve for x
   x = 7,393,076,289/55,418
6. Step 6: Final answer
   x = 133,405.69