Finding the Third Proportional to 9,219,737,893 and 19,837,818,801

Step by Step Solution

1. Step 1: Write the proportion equation
   9,219,737,893 : 19,837,818,801 = 19,837,818,801 : x
2. Step 2: Convert to fraction form
   9,219,737,893/19,837,818,801 = 19,837,818,801/x
3. Step 3: Cross multiply
   9,219,737,893x = 19,837,818,801 × 19,837,818,801
4. Step 4: Simplify right side
   9,219,737,893x = 393,539,054,781,309,059,072
5. Step 5: Solve for x
   x = 393,539,054,781,309,059,072/9,219,737,893
6. Step 6: Final answer
   x = 42,684,408,097.99