Finding the Third Proportional to 139,522.50 and 302,211

Step by Step Solution

1. Step 1: Write the proportion equation
   139,522.50 : 302,211 = 302,211 : x
2. Step 2: Convert to fraction form
   139,522.50/302,211 = 302,211/x
3. Step 3: Cross multiply
   139,522.50x = 302,211 × 302,211
4. Step 4: Simplify right side
   139,522.50x = 91,331,488,521
5. Step 5: Solve for x
   x = 91,331,488,521/139,522.50
6. Step 6: Final answer
   x = 654,600.43