Finding the Third Proportional to 70,990 and 156,384

Step by Step Solution

1. Step 1: Write the proportion equation
   70,990 : 156,384 = 156,384 : x
2. Step 2: Convert to fraction form
   70,990/156,384 = 156,384/x
3. Step 3: Cross multiply
   70,990x = 156,384 × 156,384
4. Step 4: Simplify right side
   70,990x = 24,455,955,456
5. Step 5: Solve for x
   x = 24,455,955,456/70,990
6. Step 6: Final answer
   x = 344,498.60