Finding the Third Proportional to 4,145,272 and 8,920,402

Step by Step Solution

1. Step 1: Write the proportion equation
   4,145,272 : 8,920,402 = 8,920,402 : x
2. Step 2: Convert to fraction form
   4,145,272/8,920,402 = 8,920,402/x
3. Step 3: Cross multiply
   4,145,272x = 8,920,402 × 8,920,402
4. Step 4: Simplify right side
   4,145,272x = 79,573,571,841,604
5. Step 5: Solve for x
   x = 79,573,571,841,604/4,145,272
6. Step 6: Final answer
   x = 19,196,224.48