Finding the Third Proportional to 63,981 and 100,139

Step by Step Solution

1. Step 1: Write the proportion equation
   63,981 : 100,139 = 100,139 : x
2. Step 2: Convert to fraction form
   63,981/100,139 = 100,139/x
3. Step 3: Cross multiply
   63,981x = 100,139 × 100,139
4. Step 4: Simplify right side
   63,981x = 10,027,819,321
5. Step 5: Solve for x
   x = 10,027,819,321/63,981
6. Step 6: Final answer
   x = 156,731.21