Finding the Third Proportional to 1,403,859 and 2,156,499

Step by Step Solution

1. Step 1: Write the proportion equation
   1,403,859 : 2,156,499 = 2,156,499 : x
2. Step 2: Convert to fraction form
   1,403,859/2,156,499 = 2,156,499/x
3. Step 3: Cross multiply
   1,403,859x = 2,156,499 × 2,156,499
4. Step 4: Simplify right side
   1,403,859x = 4,650,487,937,001
5. Step 5: Solve for x
   x = 4,650,487,937,001/1,403,859
6. Step 6: Final answer
   x = 3,312,646.03