Finding the Third Proportional to 31,830 and 70,248

Step by Step Solution

1. Step 1: Write the proportion equation
   31,830 : 70,248 = 70,248 : x
2. Step 2: Convert to fraction form
   31,830/70,248 = 70,248/x
3. Step 3: Cross multiply
   31,830x = 70,248 × 70,248
4. Step 4: Simplify right side
   31,830x = 4,934,781,504
5. Step 5: Solve for x
   x = 4,934,781,504/31,830
6. Step 6: Final answer
   x = 155,035.55