Finding the Third Proportional to 58,392 and 90,323

Step by Step Solution

1. Step 1: Write the proportion equation
   58,392 : 90,323 = 90,323 : x
2. Step 2: Convert to fraction form
   58,392/90,323 = 90,323/x
3. Step 3: Cross multiply
   58,392x = 90,323 × 90,323
4. Step 4: Simplify right side
   58,392x = 8,158,244,329
5. Step 5: Solve for x
   x = 8,158,244,329/58,392
6. Step 6: Final answer
   x = 139,715.10