Finding the Third Proportional to 911,017.50 and 2,109,043.50

Step by Step Solution

1. Step 1: Write the proportion equation
   911,017.50 : 2,109,043.50 = 2,109,043.50 : x
2. Step 2: Convert to fraction form
   911,017.50/2,109,043.50 = 2,109,043.50/x
3. Step 3: Cross multiply
   911,017.50x = 2,109,043.50 × 2,109,043.50
4. Step 4: Simplify right side
   911,017.50x = 4,448,064,484,892.25
5. Step 5: Solve for x
   x = 4,448,064,484,892.25/911,017.50
6. Step 6: Final answer
   x = 4,882,523.65