Finding the Third Proportional to 513,051 and 789,747.75

Step by Step Solution

1. Step 1: Write the proportion equation
   513,051 : 789,747.75 = 789,747.75 : x
2. Step 2: Convert to fraction form
   513,051/789,747.75 = 789,747.75/x
3. Step 3: Cross multiply
   513,051x = 789,747.75 × 789,747.75
4. Step 4: Simplify right side
   513,051x = 623,701,508,630.06
5. Step 5: Solve for x
   x = 623,701,508,630.06/513,051
6. Step 6: Final answer
   x = 1,215,671.56