Finding the Third Proportional to 50,403 and 78,892.50

Step by Step Solution

1. Step 1: Write the proportion equation
   50,403 : 78,892.50 = 78,892.50 : x
2. Step 2: Convert to fraction form
   50,403/78,892.50 = 78,892.50/x
3. Step 3: Cross multiply
   50,403x = 78,892.50 × 78,892.50
4. Step 4: Simplify right side
   50,403x = 6,224,026,556.25
5. Step 5: Solve for x
   x = 6,224,026,556.25/50,403
6. Step 6: Final answer
   x = 123,485.24