Finding the Third Proportional to 385,872 and 830,928

Step by Step Solution

1. Step 1: Write the proportion equation
   385,872 : 830,928 = 830,928 : x
2. Step 2: Convert to fraction form
   385,872/830,928 = 830,928/x
3. Step 3: Cross multiply
   385,872x = 830,928 × 830,928
4. Step 4: Simplify right side
   385,872x = 690,441,341,184
5. Step 5: Solve for x
   x = 690,441,341,184/385,872
6. Step 6: Final answer
   x = 1,789,301.48