Finding the Third Proportional to 840,645 and 1,155,991.50

Step by Step Solution

1. Step 1: Write the proportion equation
   840,645 : 1,155,991.50 = 1,155,991.50 : x
2. Step 2: Convert to fraction form
   840,645/1,155,991.50 = 1,155,991.50/x
3. Step 3: Cross multiply
   840,645x = 1,155,991.50 × 1,155,991.50
4. Step 4: Simplify right side
   840,645x = 1,336,316,348,072.25
5. Step 5: Solve for x
   x = 1,336,316,348,072.25/840,645
6. Step 6: Final answer
   x = 1,589,632.18