Finding the Third Proportional to 19,997,430 and 42,829,167

Step by Step Solution

1. Step 1: Write the proportion equation
   19,997,430 : 42,829,167 = 42,829,167 : x
2. Step 2: Convert to fraction form
   19,997,430/42,829,167 = 42,829,167/x
3. Step 3: Cross multiply
   19,997,430x = 42,829,167 × 42,829,167
4. Step 4: Simplify right side
   19,997,430x = 1,834,337,545,913,889
5. Step 5: Solve for x
   x = 1,834,337,545,913,889/19,997,430
6. Step 6: Final answer
   x = 91,728,664.43