Finding the Third Proportional to 58,130 and 87,111

Step by Step Solution

1. Step 1: Write the proportion equation
   58,130 : 87,111 = 87,111 : x
2. Step 2: Convert to fraction form
   58,130/87,111 = 87,111/x
3. Step 3: Cross multiply
   58,130x = 87,111 × 87,111
4. Step 4: Simplify right side
   58,130x = 7,588,326,321
5. Step 5: Solve for x
   x = 7,588,326,321/58,130
6. Step 6: Final answer
   x = 130,540.62