Finding the Third Proportional to 156,978 and 250,614

Step by Step Solution

1. Step 1: Write the proportion equation
   156,978 : 250,614 = 250,614 : x
2. Step 2: Convert to fraction form
   156,978/250,614 = 250,614/x
3. Step 3: Cross multiply
   156,978x = 250,614 × 250,614
4. Step 4: Simplify right side
   156,978x = 62,807,376,996
5. Step 5: Solve for x
   x = 62,807,376,996/156,978
6. Step 6: Final answer
   x = 400,103.05