Finding the Third Proportional to 155,454 and 411,428

Step by Step Solution

1. Step 1: Write the proportion equation
   155,454 : 411,428 = 411,428 : x
2. Step 2: Convert to fraction form
   155,454/411,428 = 411,428/x
3. Step 3: Cross multiply
   155,454x = 411,428 × 411,428
4. Step 4: Simplify right side
   155,454x = 169,272,999,184
5. Step 5: Solve for x
   x = 169,272,999,184/155,454
6. Step 6: Final answer
   x = 1,088,894.46