Finding the Third Proportional to 19,902,389.13 and 42,571,384.52

Step by Step Solution

1. Step 1: Write the proportion equation
   19,902,389.13 : 42,571,384.52 = 42,571,384.52 : x
2. Step 2: Convert to fraction form
   19,902,389.13/42,571,384.52 = 42,571,384.52/x
3. Step 3: Cross multiply
   19,902,389.13x = 42,571,384.52 × 42,571,384.52
4. Step 4: Simplify right side
   19,902,389.13x = 1,812,322,780,242,416.50
5. Step 5: Solve for x
   x = 1,812,322,780,242,416.50/19,902,389.13
6. Step 6: Final answer
   x = 91,060,564.04