Finding the Third Proportional to 71,390 and 111,038

Step by Step Solution

1. Step 1: Write the proportion equation
   71,390 : 111,038 = 111,038 : x
2. Step 2: Convert to fraction form
   71,390/111,038 = 111,038/x
3. Step 3: Cross multiply
   71,390x = 111,038 × 111,038
4. Step 4: Simplify right side
   71,390x = 12,329,437,444
5. Step 5: Solve for x
   x = 12,329,437,444/71,390
6. Step 6: Final answer
   x = 172,705.39