Finding the Third Proportional to 12,665,169 and 19,636,465.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,665,169 : 19,636,465.50 = 19,636,465.50 : x
2. Step 2: Convert to fraction form
   12,665,169/19,636,465.50 = 19,636,465.50/x
3. Step 3: Cross multiply
   12,665,169x = 19,636,465.50 × 19,636,465.50
4. Step 4: Simplify right side
   12,665,169x = 385,590,777,332,690.25
5. Step 5: Solve for x
   x = 385,590,777,332,690.25/12,665,169
6. Step 6: Final answer
   x = 30,444,976.88