Finding the Third Proportional to 31,870.13 and 70,031.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,870.13 : 70,031.25 = 70,031.25 : x
2. Step 2: Convert to fraction form
   31,870.13/70,031.25 = 70,031.25/x
3. Step 3: Cross multiply
   31,870.13x = 70,031.25 × 70,031.25
4. Step 4: Simplify right side
   31,870.13x = 4,904,375,976.56
5. Step 5: Solve for x
   x = 4,904,375,976.56/31,870.13
6. Step 6: Final answer
   x = 153,886.31