Finding the Third Proportional to 691,116 and 1,437,406

Step by Step Solution

1. Step 1: Write the proportion equation
   691,116 : 1,437,406 = 1,437,406 : x
2. Step 2: Convert to fraction form
   691,116/1,437,406 = 1,437,406/x
3. Step 3: Cross multiply
   691,116x = 1,437,406 × 1,437,406
4. Step 4: Simplify right side
   691,116x = 2,066,136,008,836
5. Step 5: Solve for x
   x = 2,066,136,008,836/691,116
6. Step 6: Final answer
   x = 2,989,564.72