Finding the Third Proportional to 643,563 and 846,284.50

Step by Step Solution

1. Step 1: Write the proportion equation
   643,563 : 846,284.50 = 846,284.50 : x
2. Step 2: Convert to fraction form
   643,563/846,284.50 = 846,284.50/x
3. Step 3: Cross multiply
   643,563x = 846,284.50 × 846,284.50
4. Step 4: Simplify right side
   643,563x = 716,197,454,940.25
5. Step 5: Solve for x
   x = 716,197,454,940.25/643,563
6. Step 6: Final answer
   x = 1,112,863.01