Finding the Third Proportional to 873,697.50 and 1,868,863.50

Step by Step Solution

1. Step 1: Write the proportion equation
   873,697.50 : 1,868,863.50 = 1,868,863.50 : x
2. Step 2: Convert to fraction form
   873,697.50/1,868,863.50 = 1,868,863.50/x
3. Step 3: Cross multiply
   873,697.50x = 1,868,863.50 × 1,868,863.50
4. Step 4: Simplify right side
   873,697.50x = 3,492,650,781,632.25
5. Step 5: Solve for x
   x = 3,492,650,781,632.25/873,697.50
6. Step 6: Final answer
   x = 3,997,551.53