Finding the Third Proportional to 423,508.50 and 911,898

Step by Step Solution

1. Step 1: Write the proportion equation
   423,508.50 : 911,898 = 911,898 : x
2. Step 2: Convert to fraction form
   423,508.50/911,898 = 911,898/x
3. Step 3: Cross multiply
   423,508.50x = 911,898 × 911,898
4. Step 4: Simplify right side
   423,508.50x = 831,557,962,404
5. Step 5: Solve for x
   x = 831,557,962,404/423,508.50
6. Step 6: Final answer
   x = 1,963,497.69