Finding the Third Proportional to 42,276 and 55,602

Step by Step Solution

1. Step 1: Write the proportion equation
   42,276 : 55,602 = 55,602 : x
2. Step 2: Convert to fraction form
   42,276/55,602 = 55,602/x
3. Step 3: Cross multiply
   42,276x = 55,602 × 55,602
4. Step 4: Simplify right side
   42,276x = 3,091,582,404
5. Step 5: Solve for x
   x = 3,091,582,404/42,276
6. Step 6: Final answer
   x = 73,128.55