Finding the Third Proportional to 171,345,746 and 261,036,140

Step by Step Solution

1. Step 1: Write the proportion equation
   171,345,746 : 261,036,140 = 261,036,140 : x
2. Step 2: Convert to fraction form
   171,345,746/261,036,140 = 261,036,140/x
3. Step 3: Cross multiply
   171,345,746x = 261,036,140 × 261,036,140
4. Step 4: Simplify right side
   171,345,746x = 68,139,866,386,099,600
5. Step 5: Solve for x
   x = 68,139,866,386,099,600/171,345,746
6. Step 6: Final answer
   x = 397,674,689.78