Finding the Third Proportional to 139,050 and 299,065.50

Step by Step Solution

1. Step 1: Write the proportion equation
   139,050 : 299,065.50 = 299,065.50 : x
2. Step 2: Convert to fraction form
   139,050/299,065.50 = 299,065.50/x
3. Step 3: Cross multiply
   139,050x = 299,065.50 × 299,065.50
4. Step 4: Simplify right side
   139,050x = 89,440,173,290.25
5. Step 5: Solve for x
   x = 89,440,173,290.25/139,050
6. Step 6: Final answer
   x = 643,223.11