Finding the Third Proportional to 31,392 and 48,090

Step by Step Solution

1. Step 1: Write the proportion equation
   31,392 : 48,090 = 48,090 : x
2. Step 2: Convert to fraction form
   31,392/48,090 = 48,090/x
3. Step 3: Cross multiply
   31,392x = 48,090 × 48,090
4. Step 4: Simplify right side
   31,392x = 2,312,648,100
5. Step 5: Solve for x
   x = 2,312,648,100/31,392
6. Step 6: Final answer
   x = 73,669.98