Finding the Third Proportional to 50,483.50 and 78,390.50

Step by Step Solution

1. Step 1: Write the proportion equation
   50,483.50 : 78,390.50 = 78,390.50 : x
2. Step 2: Convert to fraction form
   50,483.50/78,390.50 = 78,390.50/x
3. Step 3: Cross multiply
   50,483.50x = 78,390.50 × 78,390.50
4. Step 4: Simplify right side
   50,483.50x = 6,145,070,490.25
5. Step 5: Solve for x
   x = 6,145,070,490.25/50,483.50
6. Step 6: Final answer
   x = 121,724.34