Finding the Third Proportional to 59,390 and 128,062.50

Step by Step Solution

1. Step 1: Write the proportion equation
   59,390 : 128,062.50 = 128,062.50 : x
2. Step 2: Convert to fraction form
   59,390/128,062.50 = 128,062.50/x
3. Step 3: Cross multiply
   59,390x = 128,062.50 × 128,062.50
4. Step 4: Simplify right side
   59,390x = 16,400,003,906.25
5. Step 5: Solve for x
   x = 16,400,003,906.25/59,390
6. Step 6: Final answer
   x = 276,140.83