Finding the Third Proportional to 688,438 and 1,499,358

Step by Step Solution

1. Step 1: Write the proportion equation
   688,438 : 1,499,358 = 1,499,358 : x
2. Step 2: Convert to fraction form
   688,438/1,499,358 = 1,499,358/x
3. Step 3: Cross multiply
   688,438x = 1,499,358 × 1,499,358
4. Step 4: Simplify right side
   688,438x = 2,248,074,412,164
5. Step 5: Solve for x
   x = 2,248,074,412,164/688,438
6. Step 6: Final answer
   x = 3,265,471.13