Finding the Third Proportional to 678,964 and 1,488,500

Step by Step Solution

1. Step 1: Write the proportion equation
   678,964 : 1,488,500 = 1,488,500 : x
2. Step 2: Convert to fraction form
   678,964/1,488,500 = 1,488,500/x
3. Step 3: Cross multiply
   678,964x = 1,488,500 × 1,488,500
4. Step 4: Simplify right side
   678,964x = 2,215,632,250,000
5. Step 5: Solve for x
   x = 2,215,632,250,000/678,964
6. Step 6: Final answer
   x = 3,263,254.38