Finding the Third Proportional to 1,221,668 and 1,864,090

Step by Step Solution

1. Step 1: Write the proportion equation
   1,221,668 : 1,864,090 = 1,864,090 : x
2. Step 2: Convert to fraction form
   1,221,668/1,864,090 = 1,864,090/x
3. Step 3: Cross multiply
   1,221,668x = 1,864,090 × 1,864,090
4. Step 4: Simplify right side
   1,221,668x = 3,474,831,528,100
5. Step 5: Solve for x
   x = 3,474,831,528,100/1,221,668
6. Step 6: Final answer
   x = 2,844,333.75