Finding the Third Proportional to 817,681.50 and 1,909,885.50

Step by Step Solution

1. Step 1: Write the proportion equation
   817,681.50 : 1,909,885.50 = 1,909,885.50 : x
2. Step 2: Convert to fraction form
   817,681.50/1,909,885.50 = 1,909,885.50/x
3. Step 3: Cross multiply
   817,681.50x = 1,909,885.50 × 1,909,885.50
4. Step 4: Simplify right side
   817,681.50x = 3,647,662,623,110.25
5. Step 5: Solve for x
   x = 3,647,662,623,110.25/817,681.50
6. Step 6: Final answer
   x = 4,460,982.21