Finding the Third Proportional to 50,790 and 77,317.50

Step by Step Solution

1. Step 1: Write the proportion equation
   50,790 : 77,317.50 = 77,317.50 : x
2. Step 2: Convert to fraction form
   50,790/77,317.50 = 77,317.50/x
3. Step 3: Cross multiply
   50,790x = 77,317.50 × 77,317.50
4. Step 4: Simplify right side
   50,790x = 5,977,995,806.25
5. Step 5: Solve for x
   x = 5,977,995,806.25/50,790
6. Step 6: Final answer
   x = 117,700.25