Finding the Third Proportional to 429,490 and 915,856

Step by Step Solution

1. Step 1: Write the proportion equation
   429,490 : 915,856 = 915,856 : x
2. Step 2: Convert to fraction form
   429,490/915,856 = 915,856/x
3. Step 3: Cross multiply
   429,490x = 915,856 × 915,856
4. Step 4: Simplify right side
   429,490x = 838,792,212,736
5. Step 5: Solve for x
   x = 838,792,212,736/429,490
6. Step 6: Final answer
   x = 1,952,995.91