Finding the Third Proportional to 383,692.50 and 807,156

Step by Step Solution

1. Step 1: Write the proportion equation
   383,692.50 : 807,156 = 807,156 : x
2. Step 2: Convert to fraction form
   383,692.50/807,156 = 807,156/x
3. Step 3: Cross multiply
   383,692.50x = 807,156 × 807,156
4. Step 4: Simplify right side
   383,692.50x = 651,500,808,336
5. Step 5: Solve for x
   x = 651,500,808,336/383,692.50
6. Step 6: Final answer
   x = 1,697,976.40