Finding the Third Proportional to 56,717 and 83,778.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,717 : 83,778.50 = 83,778.50 : x
2. Step 2: Convert to fraction form
   56,717/83,778.50 = 83,778.50/x
3. Step 3: Cross multiply
   56,717x = 83,778.50 × 83,778.50
4. Step 4: Simplify right side
   56,717x = 7,018,837,062.25
5. Step 5: Solve for x
   x = 7,018,837,062.25/56,717
6. Step 6: Final answer
   x = 123,751.91