Finding the Third Proportional to 572,189 and 840,765.50

Step by Step Solution

1. Step 1: Write the proportion equation
   572,189 : 840,765.50 = 840,765.50 : x
2. Step 2: Convert to fraction form
   572,189/840,765.50 = 840,765.50/x
3. Step 3: Cross multiply
   572,189x = 840,765.50 × 840,765.50
4. Step 4: Simplify right side
   572,189x = 706,886,625,990.25
5. Step 5: Solve for x
   x = 706,886,625,990.25/572,189
6. Step 6: Final answer
   x = 1,235,407.58