Finding the Third Proportional to 58,412 and 91,510

Step by Step Solution

1. Step 1: Write the proportion equation
   58,412 : 91,510 = 91,510 : x
2. Step 2: Convert to fraction form
   58,412/91,510 = 91,510/x
3. Step 3: Cross multiply
   58,412x = 91,510 × 91,510
4. Step 4: Simplify right side
   58,412x = 8,374,080,100
5. Step 5: Solve for x
   x = 8,374,080,100/58,412
6. Step 6: Final answer
   x = 143,362.32