Finding the Third Proportional to 56,128 and 120,038.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,128 : 120,038.50 = 120,038.50 : x
2. Step 2: Convert to fraction form
   56,128/120,038.50 = 120,038.50/x
3. Step 3: Cross multiply
   56,128x = 120,038.50 × 120,038.50
4. Step 4: Simplify right side
   56,128x = 14,409,241,482.25
5. Step 5: Solve for x
   x = 14,409,241,482.25/56,128
6. Step 6: Final answer
   x = 256,721.09