Finding the Third Proportional to 50,499 and 78,190.50

Step by Step Solution

1. Step 1: Write the proportion equation
   50,499 : 78,190.50 = 78,190.50 : x
2. Step 2: Convert to fraction form
   50,499/78,190.50 = 78,190.50/x
3. Step 3: Cross multiply
   50,499x = 78,190.50 × 78,190.50
4. Step 4: Simplify right side
   50,499x = 6,113,754,290.25
5. Step 5: Solve for x
   x = 6,113,754,290.25/50,499
6. Step 6: Final answer
   x = 121,066.84