Finding the Third Proportional to 9,131,688 and 13,709,546

Step by Step Solution

1. Step 1: Write the proportion equation
   9,131,688 : 13,709,546 = 13,709,546 : x
2. Step 2: Convert to fraction form
   9,131,688/13,709,546 = 13,709,546/x
3. Step 3: Cross multiply
   9,131,688x = 13,709,546 × 13,709,546
4. Step 4: Simplify right side
   9,131,688x = 187,951,651,526,116
5. Step 5: Solve for x
   x = 187,951,651,526,116/9,131,688
6. Step 6: Final answer
   x = 20,582,355.81