Finding the Third Proportional to 416,259 and 891,580.50

Step by Step Solution

1. Step 1: Write the proportion equation
   416,259 : 891,580.50 = 891,580.50 : x
2. Step 2: Convert to fraction form
   416,259/891,580.50 = 891,580.50/x
3. Step 3: Cross multiply
   416,259x = 891,580.50 × 891,580.50
4. Step 4: Simplify right side
   416,259x = 794,915,787,980.25
5. Step 5: Solve for x
   x = 794,915,787,980.25/416,259
6. Step 6: Final answer
   x = 1,909,666.31