Finding the Third Proportional to 58,254 and 87,290

Step by Step Solution

1. Step 1: Write the proportion equation
   58,254 : 87,290 = 87,290 : x
2. Step 2: Convert to fraction form
   58,254/87,290 = 87,290/x
3. Step 3: Cross multiply
   58,254x = 87,290 × 87,290
4. Step 4: Simplify right side
   58,254x = 7,619,544,100
5. Step 5: Solve for x
   x = 7,619,544,100/58,254
6. Step 6: Final answer
   x = 130,798.64