Finding the Third Proportional to 134,982 and 312,492.75

Step by Step Solution

1. Step 1: Write the proportion equation
   134,982 : 312,492.75 = 312,492.75 : x
2. Step 2: Convert to fraction form
   134,982/312,492.75 = 312,492.75/x
3. Step 3: Cross multiply
   134,982x = 312,492.75 × 312,492.75
4. Step 4: Simplify right side
   134,982x = 97,651,718,802.56
5. Step 5: Solve for x
   x = 97,651,718,802.56/134,982
6. Step 6: Final answer
   x = 723,442.52