Finding the Third Proportional to 139,263 and 297,316.50

Step by Step Solution

1. Step 1: Write the proportion equation
   139,263 : 297,316.50 = 297,316.50 : x
2. Step 2: Convert to fraction form
   139,263/297,316.50 = 297,316.50/x
3. Step 3: Cross multiply
   139,263x = 297,316.50 × 297,316.50
4. Step 4: Simplify right side
   139,263x = 88,397,101,172.25
5. Step 5: Solve for x
   x = 88,397,101,172.25/139,263
6. Step 6: Final answer
   x = 634,749.37