Finding the Third Proportional to 81,003,108.38 and 128,679,116.06

Step by Step Solution

1. Step 1: Write the proportion equation
   81,003,108.38 : 128,679,116.06 = 128,679,116.06 : x
2. Step 2: Convert to fraction form
   81,003,108.38/128,679,116.06 = 128,679,116.06/x
3. Step 3: Cross multiply
   81,003,108.38x = 128,679,116.06 × 128,679,116.06
4. Step 4: Simplify right side
   81,003,108.38x = 16,558,314,910,626,346
5. Step 5: Solve for x
   x = 16,558,314,910,626,346/81,003,108.38
6. Step 6: Final answer
   x = 204,415,796.42