Finding the Third Proportional to 688,668 and 1,499,316

Step by Step Solution

1. Step 1: Write the proportion equation
   688,668 : 1,499,316 = 1,499,316 : x
2. Step 2: Convert to fraction form
   688,668/1,499,316 = 1,499,316/x
3. Step 3: Cross multiply
   688,668x = 1,499,316 × 1,499,316
4. Step 4: Simplify right side
   688,668x = 2,247,948,467,856
5. Step 5: Solve for x
   x = 2,247,948,467,856/688,668
6. Step 6: Final answer
   x = 3,264,197.65