Finding the Third Proportional to 50,484.50 and 78,389.50

Step by Step Solution

1. Step 1: Write the proportion equation
   50,484.50 : 78,389.50 = 78,389.50 : x
2. Step 2: Convert to fraction form
   50,484.50/78,389.50 = 78,389.50/x
3. Step 3: Cross multiply
   50,484.50x = 78,389.50 × 78,389.50
4. Step 4: Simplify right side
   50,484.50x = 6,144,913,710.25
5. Step 5: Solve for x
   x = 6,144,913,710.25/50,484.50
6. Step 6: Final answer
   x = 121,718.82