Finding the Third Proportional to 19,781,289 and 41,688,018

Step by Step Solution

1. Step 1: Write the proportion equation
   19,781,289 : 41,688,018 = 41,688,018 : x
2. Step 2: Convert to fraction form
   19,781,289/41,688,018 = 41,688,018/x
3. Step 3: Cross multiply
   19,781,289x = 41,688,018 × 41,688,018
4. Step 4: Simplify right side
   19,781,289x = 1,737,890,844,768,324
5. Step 5: Solve for x
   x = 1,737,890,844,768,324/19,781,289
6. Step 6: Final answer
   x = 87,855,288.13