Finding the Third Proportional to 611,672 and 1,439,136

Step by Step Solution

1. Step 1: Write the proportion equation
   611,672 : 1,439,136 = 1,439,136 : x
2. Step 2: Convert to fraction form
   611,672/1,439,136 = 1,439,136/x
3. Step 3: Cross multiply
   611,672x = 1,439,136 × 1,439,136
4. Step 4: Simplify right side
   611,672x = 2,071,112,426,496
5. Step 5: Solve for x
   x = 2,071,112,426,496/611,672
6. Step 6: Final answer
   x = 3,385,985.34