Finding the Third Proportional to 1,605,412 and 2,186,646

Step by Step Solution

1. Step 1: Write the proportion equation
   1,605,412 : 2,186,646 = 2,186,646 : x
2. Step 2: Convert to fraction form
   1,605,412/2,186,646 = 2,186,646/x
3. Step 3: Cross multiply
   1,605,412x = 2,186,646 × 2,186,646
4. Step 4: Simplify right side
   1,605,412x = 4,781,420,729,316
5. Step 5: Solve for x
   x = 4,781,420,729,316/1,605,412
6. Step 6: Final answer
   x = 2,978,313.81