Finding the Third Proportional to 72,757 and 112,139

Step by Step Solution

1. Step 1: Write the proportion equation
   72,757 : 112,139 = 112,139 : x
2. Step 2: Convert to fraction form
   72,757/112,139 = 112,139/x
3. Step 3: Cross multiply
   72,757x = 112,139 × 112,139
4. Step 4: Simplify right side
   72,757x = 12,575,155,321
5. Step 5: Solve for x
   x = 12,575,155,321/72,757
6. Step 6: Final answer
   x = 172,837.74