Finding the Third Proportional to 7,980,312 and 12,382,156

Step by Step Solution

1. Step 1: Write the proportion equation
   7,980,312 : 12,382,156 = 12,382,156 : x
2. Step 2: Convert to fraction form
   7,980,312/12,382,156 = 12,382,156/x
3. Step 3: Cross multiply
   7,980,312x = 12,382,156 × 12,382,156
4. Step 4: Simplify right side
   7,980,312x = 153,317,787,208,336
5. Step 5: Solve for x
   x = 153,317,787,208,336/7,980,312
6. Step 6: Final answer
   x = 19,212,004.14