Finding the Third Proportional to 288,079.50 and 456,055.50

Step by Step Solution

1. Step 1: Write the proportion equation
   288,079.50 : 456,055.50 = 456,055.50 : x
2. Step 2: Convert to fraction form
   288,079.50/456,055.50 = 456,055.50/x
3. Step 3: Cross multiply
   288,079.50x = 456,055.50 × 456,055.50
4. Step 4: Simplify right side
   288,079.50x = 207,986,619,080.25
5. Step 5: Solve for x
   x = 207,986,619,080.25/288,079.50
6. Step 6: Final answer
   x = 721,976.47