Finding the Third Proportional to 385,804 and 846,310.50

Step by Step Solution

1. Step 1: Write the proportion equation
   385,804 : 846,310.50 = 846,310.50 : x
2. Step 2: Convert to fraction form
   385,804/846,310.50 = 846,310.50/x
3. Step 3: Cross multiply
   385,804x = 846,310.50 × 846,310.50
4. Step 4: Simplify right side
   385,804x = 716,241,462,410.25
5. Step 5: Solve for x
   x = 716,241,462,410.25/385,804
6. Step 6: Final answer
   x = 1,856,490.50