Finding the Third Proportional to 299,464 and 649,290.50

Step by Step Solution

1. Step 1: Write the proportion equation
   299,464 : 649,290.50 = 649,290.50 : x
2. Step 2: Convert to fraction form
   299,464/649,290.50 = 649,290.50/x
3. Step 3: Cross multiply
   299,464x = 649,290.50 × 649,290.50
4. Step 4: Simplify right side
   299,464x = 421,578,153,390.25
5. Step 5: Solve for x
   x = 421,578,153,390.25/299,464
6. Step 6: Final answer
   x = 1,407,775.74