Finding the Third Proportional to 642,492 and 1,428,595.88

Step by Step Solution

1. Step 1: Write the proportion equation
   642,492 : 1,428,595.88 = 1,428,595.88 : x
2. Step 2: Convert to fraction form
   642,492/1,428,595.88 = 1,428,595.88/x
3. Step 3: Cross multiply
   642,492x = 1,428,595.88 × 1,428,595.88
4. Step 4: Simplify right side
   642,492x = 2,040,886,174,067.02
5. Step 5: Solve for x
   x = 2,040,886,174,067.02/642,492
6. Step 6: Final answer
   x = 3,176,516.09