Finding the Third Proportional to 302,425.50 and 456,069

Step by Step Solution

1. Step 1: Write the proportion equation
   302,425.50 : 456,069 = 456,069 : x
2. Step 2: Convert to fraction form
   302,425.50/456,069 = 456,069/x
3. Step 3: Cross multiply
   302,425.50x = 456,069 × 456,069
4. Step 4: Simplify right side
   302,425.50x = 207,998,932,761
5. Step 5: Solve for x
   x = 207,998,932,761/302,425.50
6. Step 6: Final answer
   x = 687,769.16