Finding the Third Proportional to 3,709,780 and 7,818,056

Step by Step Solution

1. Step 1: Write the proportion equation
   3,709,780 : 7,818,056 = 7,818,056 : x
2. Step 2: Convert to fraction form
   3,709,780/7,818,056 = 7,818,056/x
3. Step 3: Cross multiply
   3,709,780x = 7,818,056 × 7,818,056
4. Step 4: Simplify right side
   3,709,780x = 61,121,999,619,136
5. Step 5: Solve for x
   x = 61,121,999,619,136/3,709,780
6. Step 6: Final answer
   x = 16,475,909.52