Finding the Third Proportional to 302,419.50 and 456,060

Step by Step Solution

1. Step 1: Write the proportion equation
   302,419.50 : 456,060 = 456,060 : x
2. Step 2: Convert to fraction form
   302,419.50/456,060 = 456,060/x
3. Step 3: Cross multiply
   302,419.50x = 456,060 × 456,060
4. Step 4: Simplify right side
   302,419.50x = 207,990,723,600
5. Step 5: Solve for x
   x = 207,990,723,600/302,419.50
6. Step 6: Final answer
   x = 687,755.66