Finding the Third Proportional to 38,412 and 56,490

Step by Step Solution

1. Step 1: Write the proportion equation
   38,412 : 56,490 = 56,490 : x
2. Step 2: Convert to fraction form
   38,412/56,490 = 56,490/x
3. Step 3: Cross multiply
   38,412x = 56,490 × 56,490
4. Step 4: Simplify right side
   38,412x = 3,191,120,100
5. Step 5: Solve for x
   x = 3,191,120,100/38,412
6. Step 6: Final answer
   x = 83,076.12