Finding the Third Proportional to 59,490 and 81,030

Step by Step Solution

1. Step 1: Write the proportion equation
   59,490 : 81,030 = 81,030 : x
2. Step 2: Convert to fraction form
   59,490/81,030 = 81,030/x
3. Step 3: Cross multiply
   59,490x = 81,030 × 81,030
4. Step 4: Simplify right side
   59,490x = 6,565,860,900
5. Step 5: Solve for x
   x = 6,565,860,900/59,490
6. Step 6: Final answer
   x = 110,369.15