Finding the Third Proportional to 385,812 and 846,328.50

Step by Step Solution

1. Step 1: Write the proportion equation
   385,812 : 846,328.50 = 846,328.50 : x
2. Step 2: Convert to fraction form
   385,812/846,328.50 = 846,328.50/x
3. Step 3: Cross multiply
   385,812x = 846,328.50 × 846,328.50
4. Step 4: Simplify right side
   385,812x = 716,271,929,912.25
5. Step 5: Solve for x
   x = 716,271,929,912.25/385,812
6. Step 6: Final answer
   x = 1,856,530.98