Finding the Third Proportional to 1,216,134 and 1,891,566

Step by Step Solution

1. Step 1: Write the proportion equation
   1,216,134 : 1,891,566 = 1,891,566 : x
2. Step 2: Convert to fraction form
   1,216,134/1,891,566 = 1,891,566/x
3. Step 3: Cross multiply
   1,216,134x = 1,891,566 × 1,891,566
4. Step 4: Simplify right side
   1,216,134x = 3,578,021,932,356
5. Step 5: Solve for x
   x = 3,578,021,932,356/1,216,134
6. Step 6: Final answer
   x = 2,942,128.03