Finding the Third Proportional to 8,636,700 and 12,907,470

Step by Step Solution

1. Step 1: Write the proportion equation
   8,636,700 : 12,907,470 = 12,907,470 : x
2. Step 2: Convert to fraction form
   8,636,700/12,907,470 = 12,907,470/x
3. Step 3: Cross multiply
   8,636,700x = 12,907,470 × 12,907,470
4. Step 4: Simplify right side
   8,636,700x = 166,602,781,800,900
5. Step 5: Solve for x
   x = 166,602,781,800,900/8,636,700
6. Step 6: Final answer
   x = 19,290,097.12