Finding the Third Proportional to 387,127.69 and 830,322.56

Step by Step Solution

1. Step 1: Write the proportion equation
   387,127.69 : 830,322.56 = 830,322.56 : x
2. Step 2: Convert to fraction form
   387,127.69/830,322.56 = 830,322.56/x
3. Step 3: Cross multiply
   387,127.69x = 830,322.56 × 830,322.56
4. Step 4: Simplify right side
   387,127.69x = 689,435,557,796.57
5. Step 5: Solve for x
   x = 689,435,557,796.57/387,127.69
6. Step 6: Final answer
   x = 1,780,899.64