Finding the Third Proportional to 49,221 and 78,151.50

Step by Step Solution

1. Step 1: Write the proportion equation
   49,221 : 78,151.50 = 78,151.50 : x
2. Step 2: Convert to fraction form
   49,221/78,151.50 = 78,151.50/x
3. Step 3: Cross multiply
   49,221x = 78,151.50 × 78,151.50
4. Step 4: Simplify right side
   49,221x = 6,107,656,952.25
5. Step 5: Solve for x
   x = 6,107,656,952.25/49,221
6. Step 6: Final answer
   x = 124,086.41