Finding the Third Proportional to 380,430 and 899,674.50

Step by Step Solution

1. Step 1: Write the proportion equation
   380,430 : 899,674.50 = 899,674.50 : x
2. Step 2: Convert to fraction form
   380,430/899,674.50 = 899,674.50/x
3. Step 3: Cross multiply
   380,430x = 899,674.50 × 899,674.50
4. Step 4: Simplify right side
   380,430x = 809,414,205,950.25
5. Step 5: Solve for x
   x = 809,414,205,950.25/380,430
6. Step 6: Final answer
   x = 2,127,629.80