Finding the Third Proportional to 1,253,336 and 1,909,428

Step by Step Solution

1. Step 1: Write the proportion equation
   1,253,336 : 1,909,428 = 1,909,428 : x
2. Step 2: Convert to fraction form
   1,253,336/1,909,428 = 1,909,428/x
3. Step 3: Cross multiply
   1,253,336x = 1,909,428 × 1,909,428
4. Step 4: Simplify right side
   1,253,336x = 3,645,915,287,184
5. Step 5: Solve for x
   x = 3,645,915,287,184/1,253,336
6. Step 6: Final answer
   x = 2,908,968.77