Finding the Third Proportional to 58,130 and 89,788

Step by Step Solution

1. Step 1: Write the proportion equation
   58,130 : 89,788 = 89,788 : x
2. Step 2: Convert to fraction form
   58,130/89,788 = 89,788/x
3. Step 3: Cross multiply
   58,130x = 89,788 × 89,788
4. Step 4: Simplify right side
   58,130x = 8,061,884,944
5. Step 5: Solve for x
   x = 8,061,884,944/58,130
6. Step 6: Final answer
   x = 138,687.17