Finding the Third Proportional to 55,345.78 and 80,840.53

Step by Step Solution

1. Step 1: Write the proportion equation
   55,345.78 : 80,840.53 = 80,840.53 : x
2. Step 2: Convert to fraction form
   55,345.78/80,840.53 = 80,840.53/x
3. Step 3: Cross multiply
   55,345.78x = 80,840.53 × 80,840.53
4. Step 4: Simplify right side
   55,345.78x = 6,535,191,492.78
5. Step 5: Solve for x
   x = 6,535,191,492.78/55,345.78
6. Step 6: Final answer
   x = 118,079.31