Finding the Third Proportional to 59,729 and 90,359

Step by Step Solution

1. Step 1: Write the proportion equation
   59,729 : 90,359 = 90,359 : x
2. Step 2: Convert to fraction form
   59,729/90,359 = 90,359/x
3. Step 3: Cross multiply
   59,729x = 90,359 × 90,359
4. Step 4: Simplify right side
   59,729x = 8,164,748,881
5. Step 5: Solve for x
   x = 8,164,748,881/59,729
6. Step 6: Final answer
   x = 136,696.56