Finding the Third Proportional to 907,136 and 1,986,272

Step by Step Solution

1. Step 1: Write the proportion equation
   907,136 : 1,986,272 = 1,986,272 : x
2. Step 2: Convert to fraction form
   907,136/1,986,272 = 1,986,272/x
3. Step 3: Cross multiply
   907,136x = 1,986,272 × 1,986,272
4. Step 4: Simplify right side
   907,136x = 3,945,276,457,984
5. Step 5: Solve for x
   x = 3,945,276,457,984/907,136
6. Step 6: Final answer
   x = 4,349,156.53