Finding the Third Proportional to 420,168 and 651,676.50

Step by Step Solution

1. Step 1: Write the proportion equation
   420,168 : 651,676.50 = 651,676.50 : x
2. Step 2: Convert to fraction form
   420,168/651,676.50 = 651,676.50/x
3. Step 3: Cross multiply
   420,168x = 651,676.50 × 651,676.50
4. Step 4: Simplify right side
   420,168x = 424,682,260,652.25
5. Step 5: Solve for x
   x = 424,682,260,652.25/420,168
6. Step 6: Final answer
   x = 1,010,743.94