Finding the Third Proportional to 276,342 and 405,445.50

Step by Step Solution

1. Step 1: Write the proportion equation
   276,342 : 405,445.50 = 405,445.50 : x
2. Step 2: Convert to fraction form
   276,342/405,445.50 = 405,445.50/x
3. Step 3: Cross multiply
   276,342x = 405,445.50 × 405,445.50
4. Step 4: Simplify right side
   276,342x = 164,386,053,470.25
5. Step 5: Solve for x
   x = 164,386,053,470.25/276,342
6. Step 6: Final answer
   x = 594,864.53