Finding the Third Proportional to 139,475 and 207,160

Step by Step Solution

1. Step 1: Write the proportion equation
   139,475 : 207,160 = 207,160 : x
2. Step 2: Convert to fraction form
   139,475/207,160 = 207,160/x
3. Step 3: Cross multiply
   139,475x = 207,160 × 207,160
4. Step 4: Simplify right side
   139,475x = 42,915,265,600
5. Step 5: Solve for x
   x = 42,915,265,600/139,475
6. Step 6: Final answer
   x = 307,691.45