Finding the Third Proportional to 19,905,326,590 and 42,764,657,404

Step by Step Solution

1. Step 1: Write the proportion equation
   19,905,326,590 : 42,764,657,404 = 42,764,657,404 : x
2. Step 2: Convert to fraction form
   19,905,326,590/42,764,657,404 = 42,764,657,404/x
3. Step 3: Cross multiply
   19,905,326,590x = 42,764,657,404 × 42,764,657,404
4. Step 4: Simplify right side
   19,905,326,590x = 1,828,815,922,881,491,894,272
5. Step 5: Solve for x
   x = 1,828,815,922,881,491,894,272/19,905,326,590
6. Step 6: Final answer
   x = 91,875,705,460.68