Finding the Third Proportional to 422,908.50 and 911,835

Step by Step Solution

1. Step 1: Write the proportion equation
   422,908.50 : 911,835 = 911,835 : x
2. Step 2: Convert to fraction form
   422,908.50/911,835 = 911,835/x
3. Step 3: Cross multiply
   422,908.50x = 911,835 × 911,835
4. Step 4: Simplify right side
   422,908.50x = 831,443,067,225
5. Step 5: Solve for x
   x = 831,443,067,225/422,908.50
6. Step 6: Final answer
   x = 1,966,011.72