Finding the Third Proportional to 331,872 and 780,100.50

Step by Step Solution

1. Step 1: Write the proportion equation
   331,872 : 780,100.50 = 780,100.50 : x
2. Step 2: Convert to fraction form
   331,872/780,100.50 = 780,100.50/x
3. Step 3: Cross multiply
   331,872x = 780,100.50 × 780,100.50
4. Step 4: Simplify right side
   331,872x = 608,556,790,100.25
5. Step 5: Solve for x
   x = 608,556,790,100.25/331,872
6. Step 6: Final answer
   x = 1,833,709.35