Finding the Third Proportional to 51,430.50 and 77,287.50

Step by Step Solution

1. Step 1: Write the proportion equation
   51,430.50 : 77,287.50 = 77,287.50 : x
2. Step 2: Convert to fraction form
   51,430.50/77,287.50 = 77,287.50/x
3. Step 3: Cross multiply
   51,430.50x = 77,287.50 × 77,287.50
4. Step 4: Simplify right side
   51,430.50x = 5,973,357,656.25
5. Step 5: Solve for x
   x = 5,973,357,656.25/51,430.50
6. Step 6: Final answer
   x = 116,144.27