Finding the Third Proportional to 139,069.50 and 303,516

Step by Step Solution

1. Step 1: Write the proportion equation
   139,069.50 : 303,516 = 303,516 : x
2. Step 2: Convert to fraction form
   139,069.50/303,516 = 303,516/x
3. Step 3: Cross multiply
   139,069.50x = 303,516 × 303,516
4. Step 4: Simplify right side
   139,069.50x = 92,121,962,256
5. Step 5: Solve for x
   x = 92,121,962,256/139,069.50
6. Step 6: Final answer
   x = 662,416.72