Finding the Third Proportional to 385,615.50 and 830,442

Step by Step Solution

1. Step 1: Write the proportion equation
   385,615.50 : 830,442 = 830,442 : x
2. Step 2: Convert to fraction form
   385,615.50/830,442 = 830,442/x
3. Step 3: Cross multiply
   385,615.50x = 830,442 × 830,442
4. Step 4: Simplify right side
   385,615.50x = 689,633,915,364
5. Step 5: Solve for x
   x = 689,633,915,364/385,615.50
6. Step 6: Final answer
   x = 1,788,397.81