Finding the Third Proportional to 1,663,738 and 3,406,172

Step by Step Solution

1. Step 1: Write the proportion equation
   1,663,738 : 3,406,172 = 3,406,172 : x
2. Step 2: Convert to fraction form
   1,663,738/3,406,172 = 3,406,172/x
3. Step 3: Cross multiply
   1,663,738x = 3,406,172 × 3,406,172
4. Step 4: Simplify right side
   1,663,738x = 11,602,007,693,584
5. Step 5: Solve for x
   x = 11,602,007,693,584/1,663,738
6. Step 6: Final answer
   x = 6,973,458.38