Finding the Third Proportional to 185,389,146 and 280,469,731.50

Step by Step Solution

1. Step 1: Write the proportion equation
   185,389,146 : 280,469,731.50 = 280,469,731.50 : x
2. Step 2: Convert to fraction form
   185,389,146/280,469,731.50 = 280,469,731.50/x
3. Step 3: Cross multiply
   185,389,146x = 280,469,731.50 × 280,469,731.50
4. Step 4: Simplify right side
   185,389,146x = 78,663,270,287,682,096
5. Step 5: Solve for x
   x = 78,663,270,287,682,096/185,389,146
6. Step 6: Final answer
   x = 424,314,324.68