Finding the Third Proportional to 511,430 and 767,145.50

Step by Step Solution

1. Step 1: Write the proportion equation
   511,430 : 767,145.50 = 767,145.50 : x
2. Step 2: Convert to fraction form
   511,430/767,145.50 = 767,145.50/x
3. Step 3: Cross multiply
   511,430x = 767,145.50 × 767,145.50
4. Step 4: Simplify right side
   511,430x = 588,512,218,170.25
5. Step 5: Solve for x
   x = 588,512,218,170.25/511,430
6. Step 6: Final answer
   x = 1,150,719.00