Finding the Third Proportional to 605,199 and 890,275.50

Step by Step Solution

1. Step 1: Write the proportion equation
   605,199 : 890,275.50 = 890,275.50 : x
2. Step 2: Convert to fraction form
   605,199/890,275.50 = 890,275.50/x
3. Step 3: Cross multiply
   605,199x = 890,275.50 × 890,275.50
4. Step 4: Simplify right side
   605,199x = 792,590,465,900.25
5. Step 5: Solve for x
   x = 792,590,465,900.25/605,199
6. Step 6: Final answer
   x = 1,309,636.11