Finding the Third Proportional to 2,140,402 and 3,139,646

Step by Step Solution

1. Step 1: Write the proportion equation
   2,140,402 : 3,139,646 = 3,139,646 : x
2. Step 2: Convert to fraction form
   2,140,402/3,139,646 = 3,139,646/x
3. Step 3: Cross multiply
   2,140,402x = 3,139,646 × 3,139,646
4. Step 4: Simplify right side
   2,140,402x = 9,857,377,005,316
5. Step 5: Solve for x
   x = 9,857,377,005,316/2,140,402
6. Step 6: Final answer
   x = 4,605,385.81