Finding the Third Proportional to 2,590,905,906 and 5,641,839,972

Step by Step Solution

1. Step 1: Write the proportion equation
   2,590,905,906 : 5,641,839,972 = 5,641,839,972 : x
2. Step 2: Convert to fraction form
   2,590,905,906/5,641,839,972 = 5,641,839,972/x
3. Step 3: Cross multiply
   2,590,905,906x = 5,641,839,972 × 5,641,839,972
4. Step 4: Simplify right side
   2,590,905,906x = 31,830,358,269,656,961,024
5. Step 5: Solve for x
   x = 31,830,358,269,656,961,024/2,590,905,906
6. Step 6: Final answer
   x = 12,285,416,539.42