Finding the Third Proportional to 30,312 and 64,998

Step by Step Solution

1. Step 1: Write the proportion equation
   30,312 : 64,998 = 64,998 : x
2. Step 2: Convert to fraction form
   30,312/64,998 = 64,998/x
3. Step 3: Cross multiply
   30,312x = 64,998 × 64,998
4. Step 4: Simplify right side
   30,312x = 4,224,740,004
5. Step 5: Solve for x
   x = 4,224,740,004/30,312
6. Step 6: Final answer
   x = 139,375.17