Finding the Third Proportional to 178,407.56 and 276,670.69

Step by Step Solution

1. Step 1: Write the proportion equation
   178,407.56 : 276,670.69 = 276,670.69 : x
2. Step 2: Convert to fraction form
   178,407.56/276,670.69 = 276,670.69/x
3. Step 3: Cross multiply
   178,407.56x = 276,670.69 × 276,670.69
4. Step 4: Simplify right side
   178,407.56x = 76,546,669,321.72
5. Step 5: Solve for x
   x = 76,546,669,321.72/178,407.56
6. Step 6: Final answer
   x = 429,055.07