Finding the Third Proportional to 72,440 and 111,476

Step by Step Solution

1. Step 1: Write the proportion equation
   72,440 : 111,476 = 111,476 : x
2. Step 2: Convert to fraction form
   72,440/111,476 = 111,476/x
3. Step 3: Cross multiply
   72,440x = 111,476 × 111,476
4. Step 4: Simplify right side
   72,440x = 12,426,898,576
5. Step 5: Solve for x
   x = 12,426,898,576/72,440
6. Step 6: Final answer
   x = 171,547.47