Finding the Third Proportional to 31,312 and 42,936

Step by Step Solution

1. Step 1: Write the proportion equation
   31,312 : 42,936 = 42,936 : x
2. Step 2: Convert to fraction form
   31,312/42,936 = 42,936/x
3. Step 3: Cross multiply
   31,312x = 42,936 × 42,936
4. Step 4: Simplify right side
   31,312x = 1,843,500,096
5. Step 5: Solve for x
   x = 1,843,500,096/31,312
6. Step 6: Final answer
   x = 58,875.19