Finding the Third Proportional to 58,599 and 90,679.50

Step by Step Solution

1. Step 1: Write the proportion equation
   58,599 : 90,679.50 = 90,679.50 : x
2. Step 2: Convert to fraction form
   58,599/90,679.50 = 90,679.50/x
3. Step 3: Cross multiply
   58,599x = 90,679.50 × 90,679.50
4. Step 4: Simplify right side
   58,599x = 8,222,771,720.25
5. Step 5: Solve for x
   x = 8,222,771,720.25/58,599
6. Step 6: Final answer
   x = 140,322.73