Finding the Third Proportional to 56,221.50 and 120,412.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,221.50 : 120,412.50 = 120,412.50 : x
2. Step 2: Convert to fraction form
   56,221.50/120,412.50 = 120,412.50/x
3. Step 3: Cross multiply
   56,221.50x = 120,412.50 × 120,412.50
4. Step 4: Simplify right side
   56,221.50x = 14,499,170,156.25
5. Step 5: Solve for x
   x = 14,499,170,156.25/56,221.50
6. Step 6: Final answer
   x = 257,893.69