Finding the Third Proportional to 8,564,346 and 12,309,972

Step by Step Solution

1. Step 1: Write the proportion equation
   8,564,346 : 12,309,972 = 12,309,972 : x
2. Step 2: Convert to fraction form
   8,564,346/12,309,972 = 12,309,972/x
3. Step 3: Cross multiply
   8,564,346x = 12,309,972 × 12,309,972
4. Step 4: Simplify right side
   8,564,346x = 151,535,410,640,784
5. Step 5: Solve for x
   x = 151,535,410,640,784/8,564,346
6. Step 6: Final answer
   x = 17,693,751.59