Finding the Third Proportional to 900,372 and 1,921,272

Step by Step Solution

1. Step 1: Write the proportion equation
   900,372 : 1,921,272 = 1,921,272 : x
2. Step 2: Convert to fraction form
   900,372/1,921,272 = 1,921,272/x
3. Step 3: Cross multiply
   900,372x = 1,921,272 × 1,921,272
4. Step 4: Simplify right side
   900,372x = 3,691,286,097,984
5. Step 5: Solve for x
   x = 3,691,286,097,984/900,372
6. Step 6: Final answer
   x = 4,099,734.44