Finding the Third Proportional to 66,026 and 89,710

Step by Step Solution

1. Step 1: Write the proportion equation
   66,026 : 89,710 = 89,710 : x
2. Step 2: Convert to fraction form
   66,026/89,710 = 89,710/x
3. Step 3: Cross multiply
   66,026x = 89,710 × 89,710
4. Step 4: Simplify right side
   66,026x = 8,047,884,100
5. Step 5: Solve for x
   x = 8,047,884,100/66,026
6. Step 6: Final answer
   x = 121,889.62