Finding the Third Proportional to 86,663,799 and 134,623,404

Step by Step Solution

1. Step 1: Write the proportion equation
   86,663,799 : 134,623,404 = 134,623,404 : x
2. Step 2: Convert to fraction form
   86,663,799/134,623,404 = 134,623,404/x
3. Step 3: Cross multiply
   86,663,799x = 134,623,404 × 134,623,404
4. Step 4: Simplify right side
   86,663,799x = 18,123,460,904,547,216
5. Step 5: Solve for x
   x = 18,123,460,904,547,216/86,663,799
6. Step 6: Final answer
   x = 209,123,776.17