Finding the Third Proportional to 156,912 and 342,981

Step by Step Solution

1. Step 1: Write the proportion equation
   156,912 : 342,981 = 342,981 : x
2. Step 2: Convert to fraction form
   156,912/342,981 = 342,981/x
3. Step 3: Cross multiply
   156,912x = 342,981 × 342,981
4. Step 4: Simplify right side
   156,912x = 117,635,966,361
5. Step 5: Solve for x
   x = 117,635,966,361/156,912
6. Step 6: Final answer
   x = 749,693.88