Finding the Third Proportional to 156,722 and 338,380

Step by Step Solution

1. Step 1: Write the proportion equation
   156,722 : 338,380 = 338,380 : x
2. Step 2: Convert to fraction form
   156,722/338,380 = 338,380/x
3. Step 3: Cross multiply
   156,722x = 338,380 × 338,380
4. Step 4: Simplify right side
   156,722x = 114,501,024,400
5. Step 5: Solve for x
   x = 114,501,024,400/156,722
6. Step 6: Final answer
   x = 730,599.56