Finding the Third Proportional to 342,633 and 789,676.50

Step by Step Solution

1. Step 1: Write the proportion equation
   342,633 : 789,676.50 = 789,676.50 : x
2. Step 2: Convert to fraction form
   342,633/789,676.50 = 789,676.50/x
3. Step 3: Cross multiply
   342,633x = 789,676.50 × 789,676.50
4. Step 4: Simplify right side
   342,633x = 623,588,974,652.25
5. Step 5: Solve for x
   x = 623,588,974,652.25/342,633
6. Step 6: Final answer
   x = 1,819,991.00