Finding the Third Proportional to 278,964 and 604,280.25

Step by Step Solution

1. Step 1: Write the proportion equation
   278,964 : 604,280.25 = 604,280.25 : x
2. Step 2: Convert to fraction form
   278,964/604,280.25 = 604,280.25/x
3. Step 3: Cross multiply
   278,964x = 604,280.25 × 604,280.25
4. Step 4: Simplify right side
   278,964x = 365,154,620,540.06
5. Step 5: Solve for x
   x = 365,154,620,540.06/278,964
6. Step 6: Final answer
   x = 1,308,966.82