Finding the Third Proportional to 9,870,340 and 13,446,653

Step by Step Solution

1. Step 1: Write the proportion equation
   9,870,340 : 13,446,653 = 13,446,653 : x
2. Step 2: Convert to fraction form
   9,870,340/13,446,653 = 13,446,653/x
3. Step 3: Cross multiply
   9,870,340x = 13,446,653 × 13,446,653
4. Step 4: Simplify right side
   9,870,340x = 180,812,476,902,409
5. Step 5: Solve for x
   x = 180,812,476,902,409/9,870,340
6. Step 6: Final answer
   x = 18,318,768.85