Finding the Third Proportional to 59,211 and 89,430.75

Step by Step Solution

1. Step 1: Write the proportion equation
   59,211 : 89,430.75 = 89,430.75 : x
2. Step 2: Convert to fraction form
   59,211/89,430.75 = 89,430.75/x
3. Step 3: Cross multiply
   59,211x = 89,430.75 × 89,430.75
4. Step 4: Simplify right side
   59,211x = 7,997,859,045.56
5. Step 5: Solve for x
   x = 7,997,859,045.56/59,211
6. Step 6: Final answer
   x = 135,073.87