Finding the Third Proportional to 72,461.25 and 156,978.75

Step by Step Solution

1. Step 1: Write the proportion equation
   72,461.25 : 156,978.75 = 156,978.75 : x
2. Step 2: Convert to fraction form
   72,461.25/156,978.75 = 156,978.75/x
3. Step 3: Cross multiply
   72,461.25x = 156,978.75 × 156,978.75
4. Step 4: Simplify right side
   72,461.25x = 24,642,327,951.56
5. Step 5: Solve for x
   x = 24,642,327,951.56/72,461.25
6. Step 6: Final answer
   x = 340,075.94