Finding the Third Proportional to 890,634 and 1,868,746.50

Step by Step Solution

1. Step 1: Write the proportion equation
   890,634 : 1,868,746.50 = 1,868,746.50 : x
2. Step 2: Convert to fraction form
   890,634/1,868,746.50 = 1,868,746.50/x
3. Step 3: Cross multiply
   890,634x = 1,868,746.50 × 1,868,746.50
4. Step 4: Simplify right side
   890,634x = 3,492,213,481,262.25
5. Step 5: Solve for x
   x = 3,492,213,481,262.25/890,634
6. Step 6: Final answer
   x = 3,921,042.18