Finding the Third Proportional to 42,267,939,293 and 90,586,406,421

Step by Step Solution

1. Step 1: Write the proportion equation
   42,267,939,293 : 90,586,406,421 = 90,586,406,421 : x
2. Step 2: Convert to fraction form
   42,267,939,293/90,586,406,421 = 90,586,406,421/x
3. Step 3: Cross multiply
   42,267,939,293x = 90,586,406,421 × 90,586,406,421
4. Step 4: Simplify right side
   42,267,939,293x = 8,205,897,028,270,589,739,008
5. Step 5: Solve for x
   x = 8,205,897,028,270,589,739,008/42,267,939,293
6. Step 6: Final answer
   x = 194,139,983,295.32