Finding the Third Proportional to 13,686,691.50 and 21,185,185.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,686,691.50 : 21,185,185.50 = 21,185,185.50 : x
2. Step 2: Convert to fraction form
   13,686,691.50/21,185,185.50 = 21,185,185.50/x
3. Step 3: Cross multiply
   13,686,691.50x = 21,185,185.50 × 21,185,185.50
4. Step 4: Simplify right side
   13,686,691.50x = 448,812,084,669,410.25
5. Step 5: Solve for x
   x = 448,812,084,669,410.25/13,686,691.50
6. Step 6: Final answer
   x = 32,791,860.96