Finding the Third Proportional to 357,534 and 786,145.50

Step by Step Solution

1. Step 1: Write the proportion equation
   357,534 : 786,145.50 = 786,145.50 : x
2. Step 2: Convert to fraction form
   357,534/786,145.50 = 786,145.50/x
3. Step 3: Cross multiply
   357,534x = 786,145.50 × 786,145.50
4. Step 4: Simplify right side
   357,534x = 618,024,747,170.25
5. Step 5: Solve for x
   x = 618,024,747,170.25/357,534
6. Step 6: Final answer
   x = 1,728,576.16