Finding the Third Proportional to 357,858 and 780,019.88

Step by Step Solution

1. Step 1: Write the proportion equation
   357,858 : 780,019.88 = 780,019.88 : x
2. Step 2: Convert to fraction form
   357,858/780,019.88 = 780,019.88/x
3. Step 3: Cross multiply
   357,858x = 780,019.88 × 780,019.88
4. Step 4: Simplify right side
   357,858x = 608,431,005,395.02
5. Step 5: Solve for x
   x = 608,431,005,395.02/357,858
6. Step 6: Final answer
   x = 1,700,202.33